Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
6082123Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 266
P-1
B1 = 4500000
B2 = 5046317640
ECM
DigitsB1Curves
255000058 / 280
Estimated T-Level: 21.0 ⓘ
LL
StatusDateUserResidueShift
Verified1999-06-15Kevin Swan10A2D7C832B1ABD73679765
Verified2000-12-31Michael Welsh Duggan10A2D7C832B1ABD72519126
History
DateUserTypeResult
2024-05-19Sid & AndyNF-PM1
B1=4500000, B2=5046317640
2023-03-12takahashiNF
no factor from 2^72 to 2^73
2022-07-01takahashiNF-PM1
B1=2500000, B2=50000000
2021-09-18SRBaseNF
no factor from 2^71 to 2^72
2021-03-11takahashiNF
no factor from 2^70 to 2^71
2020-12-19takahashiNF
no factor from 2^69 to 2^70
2020-03-09takahashiNF
no factor from 2^68 to 2^69
2019-06-19takahashiNF-PM1
B1=400000, B2=7500000, E=12
2018-05-29ramgeisNF
no factor from 2^67 to 2^68
2016-03-14Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-09snme2pm1NF
no factor from 2^65 to 2^66
2014-09-17monstNF
no factor from 2^64 to 2^65
2014-09-12NesowaNF
no factor from 2^63 to 2^64
2011-04-07markrNF-PM1
B1=110000, B2=2200000, E=6